Keep applications open in the background. Organise your apps with folders. Shop for books in the iBookstore. The 8GB iPhone 3GS takes advantage of all the great features of iOS 4.

Multitasking

Now you can run your favourite third-party apps - and switch between them instantly - without slowing down the performance of the foreground app or draining the battery unnecessarily. So you can listen to a football game while emailing. Or receive a VoIP call while playing a game.

Folders

Drag and drop to organise apps into folders on your Home screens and get fast access to your favourites.